Making an Odd Bet in Roulette

Betting on odd is a popular betting option among roulette players. The low risk coupled with its ridiculously high winning odds make it very appealing to both beginners and long-time gamers alike. Like the even bet, the odd bet puts more favor towards the player; and we’re going to explain it further why.

What exactly is an odd bet?

For the uninitiated, a roulette wheel has 36 numbers in total. This excludes the zero (in a European roulette wheel) and the double zero (exclusive in an American roulette game variant). The 36 numbers are split into two with 18 being even numbers and another 18 for the odd ones. Note that zero and the double zero numbers do not count as either odd or even.

Now, an odd bet is an example of an outside bet. An outside bet is one of the two main categories of roulette betting; the other one is an inside bet. The latter refers to the bets on a single number (straight), a split (2 numbers), a street (3 numbers), a square (4 numbers), a topline (5 numbers), and a 6 line (6 numbers). The probability of winning in an inside bet is marginally low but the payoff is huge. For example, in a straight, the payout is 35:1, which means your £1 gets £35.

Outside bet is a different story. These are bets made on groups consisting of many numbers. You might also include the red or black bet as well. The payout, however, is quite low. This is where an odd bet belongs.

If the player decides to place his bet inside the odd bet box and when the ball indeed lands on one of the odd numbers in the wheel, then he is paid out 1 to 1.

Odds of getting odd

We said earlier that there are 18 odd digits out of the 36 numbers. People sometimes think that this puts the odds of winning an odd bet 50/50. Not entirely so. You see, the casino has got to earn money and the surefire way to do this is by increasing their edge. (House edge explained more here). The solution to this problem are the green-colored zeroes.

Let’s take a look at the European roulette wheel. This roulette variant only has one zero, so that gives 37 numbers in all. To calculate the probability a player could win an odd bet, we divide 18 (the total odd numbers) by 37 which gives us 0.486 or 48.64%.

The American roulette, meanwhile, has zero and double zero on top of the 36 numbers. From here, we calculate it as 18 divided by 38 equals 0.4736 or 47.36%.

Both figures look closer to 50% but apparently between the two, the American roulette wheel stands with the highest casino advantage thanks to its extra double zero.

A good rule of thumb: when you’re either in a land-based or online casino, try to look out for the game that offers the better odds to the player. In roulette, that would obviously be the European roulette wheel.


At a glance, here are the advantages on why you should make that odd bet:

  • Almost 50/50 winning probability
  • Easy to make
  • Low risk
  • Perfectly compatible with popular roulette betting systems like Martingale, D’Alebert or Fibonacci


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